Nonprint mechanism for adding machines



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June 28, 1927' H, LANDSlEDEL NONPRINT MECHANISM FOR ADDING MACHINES original Filed om. 4, 1922 4 Sheets-5heet QN. y

1 7. June 28 92 H. LANDSIEDEL NONPRINT MECHANISM FOR ADDING MACHINES Original Filed Oct/Hj 1922 4 Sheet'heet 2 Y/ff/ June 28,1927. 11533588 H. LANDSIEDEL v NONPRINT MECHANISM FOR ADDING MACHINES originalFiled Oct. 4, 1922 4 sheets-sheet 3 [NI/ENTOR ATTORNEY June 28 1927- H. LANDSIEDEL.

NONPRINT MECHANISM FOR ADDING MACHINES original Filed 001.4. 1922 4 sheets-sheet 4 Patented .lune `28, 1927.

UNITED STATES HARRY LANDBIEDEL, I' CINCINNATI, OHIO, ASSIGNOB TO THE DALTON ADDING.

PATENT oFr-lca IACHINE COKPANY, OF CINCINNATI, OHIO, A CORPORATION 0I' OHIO.

N'ONPBILNI IECHANISM FOB ADDING MACHINES.

Application led October 4, 1922, Serial 11e. 592,197. Renewed September 18, 1938.

This invention relates to a mechanism for use primarily in connection with an adding or similar computing machine in which, in itsnormal operation, type bars or sectors are moved tothe requisite positions to bring the intended numbers to the printing line, after which, upon reciproeation of the handle, hammers are released to drive the type against the inking ribbon backed by the platen to record the selected numerals on'the paper.` y

An object of ,thepresent invention is to provide simple Aand positive means for the non-printing of figures which secures the resultsstate'd by preventing the release of the hammers. A similar result has heretofore been accomplished by locking the movement of the hammers after they have been released but before the type hasbeen struck,

which method, however, results inl an idle and unnecessary firing of the hammers which is a less desirable method than thel one here in described.

A further object is to provide means for latching down the non-print key, so that a single set of numeral figures may be non-Y printed and also to' provide locking means whereby the operator may non-print any number of items without further attention to $0 the key. f

A further object is to provide means for blocking the movement of the platenecarriage mechanism, so that the platen will not rotate when the non-print key is depressed to its operative position.

' Means whereby the above results are attained comprise the essential features of the present inventionwhich will now be de# scribed.

0 In the drawings:

Figure 1 .is a side eleva-tion of a Dalton' deplressed when the operating lever is norma Fig. 5 is a similar view, showin the position that the parts assume when die operating lever is in its extreme forward position;

Fig. 6 is a view showing the non-print keys in normal or raised position with the train of connections for actuating the platen; and

Fig. 7 is a similar view showing the position assumed when the operatinghandle is pulled forward. v

The machine, as a whole, is mounted upon a base 10 which supports side walls 11 con nected by means of a top plate 12 upon which is mounted a hood 13 which houses a series of hammers 14 which co-act with a series of type carriers 15 carrying movable type 16, one hammer being provided for each set of nine type carriers, and adapted to strike ythe particular type of the series which is moved to the printing line. The type oo-act with a platen 17 which is adapted to be rotated by suitable mechanism shown in Fi 6 and 7 in a manner well known in' the a ding machine art. y

' Each type carrier 15 is mounted upon and forms part of a sector 18, which Sectors are freely mounted u on a fixed shaft 19 and arranged with eac sector is an adding rack 20. Each rack is provided with a heel 21 which is ada ted to be stopped by any one of a series o movable stops 22 mounted in a transversely traveling carriage 23. The stops are adapted to be set up by the action of tappets 24: carried by key levers 25 terminating in keys 26.

The above mechanisms constitute some of the more im rtant elements of a Dalton adding machine, but the specific construction and mode of operation of these parts is we'll understood by those skilled in the art, and further description thereof is deemed unnecessary.

Each hammer 14 of the bank of hammers is pivoted upon a erom bar 27, and each hammer is provided with a hooked tail piece 28 which co-acts with the aligned member of a series of latches 29, the number of latches being equal to the number of hammers. Each latch 29 is of the conti u'ation best shown inl Fig. 3, being provid with an inwardly extending tongue 30 which bears against a stud 31 carried bythe co-acting @esegesi f :ffnriher erowhich is en ie coerel m ou fe-ehes 'io Lise.

ongues i eonfiecii 'with `he unoiee oi. he he terminus of he of ehe iiniiciie, 'lo e iiing; oei Wiii more feo "he rear,

.showing he requisite es sis-ieciy aiierehy nnmiler of projee" iingers to spring; upwardly inio Desir/ion so engage ehe forward edge of A@he firing bei' when in refirwer position Withou, however, effecting s reieese o' the iiemmM-eii pieees 28 el', this siege of ille opestl However, upon die beginning of 1he reinen movement of Jhe heneile, ehe elevsied portion of the i ii srv'eenI onder 1 ie relier All, thereby Swingin j the upper end of file hell eianh 37 enel eiiiah iry 'iie iring her which will hos eerry forward the engaged number of ieeiies andt effeei s reieese of e like number oifimmniers which wilil he ired by ehe Jtension o springs 6, one spring being povided for eeelihemrner.

Lhe shove mechanisms ao in the menne@ stated hiring the nomia@ oneieion oi? "che machine, but ie *fo eieehie such meeheeross her 3e nisms prevent printing, the following eleviees are provided:

Ai; one end the hoocl i3 is a non-print he f l 'forwardly extendingr '2i-om o Vertical shank portion i8 :pros/'ideal with upper end lower sios i9 and 50, the former of which i'eeeires e guide pin 5l ougwerdly projecting;v rom n rertieoiiy disposed hess secured to or 'formed upon ihe proximate end of die hood., The shank 48 extends ihrough e slot in the iop pfle'e l2, and said sheni: on its inner edge is provided wili i shonleie.: 55 Whieii, when elle shank is depressed by die meenemen" of 'ehe key, is o ioptecl zo hooir. ui1- der J`ehe inner die sloe to heid he hey in depressed eonoiieionc The hey shank i8 is plovideci neer its lower end. Wih :i heel 55 "lich noimeiiy occupies e position s i ehe rear of and above Jche plane o. e ling ioni 869 being normally nelcl in il' josition hy the ensiori or the spring 5i. Then he hey shank is depressed e: v .n i i in press i, o i me hey, Lne n el 5G will asesino e ie `needle.@elyd e rear oi the ining oer so mai; the ber Wiii 3e stom eno' heid against rearward movement smi me progee'tions 35 on he is elesired to hold the non-print hey depressed during s succession of operations of 'he handle, `this result may he effected by means o e loch lever 58 which is pivoe n "Lhe sind 52 and slotted to oseillute on iiie 5l. The loeleiever is provided Wih en informeel eer 59 which, when the non-print hey is clepresse7 may be rocked forward into position io engage ille lippe' enci of ille hey shank? and thereby hold he seme depressed independentlg,T oi' fille hitching engegeinen; o1e the shoulder 55 with the end o -ille slot 5e. rEhe iii-ing of the lininmers een thus he dispensed wish for es iong e periodi of time es occasion may require.

In orderl to estore the hammers to normal iosiiion after iii-ing, s, restoring *our E@ is provided (see Fig. 2), hich 'our is carried by s, pair oi swinging arms 61., which arms are pivoied to e pair of stucis 62. the formation beingI that of e universal buil which may be swung forwardly eo engage and restore all of the hammers which muy he iii-eci. @ne of the arms 6l is provided with a'iearward extension 62 carrying :l roller 63 which rides upon s cam (S mounted upon the main operating shaft the arrangement being such time as the handle imi is pulled forwardly, the restoring har will be swung to the rear, thereby clearing all of the hammers and permitting the subsequent firing of those hammers which are subsequently unlatchedhy the action ot the firing har as previously described. During the completion of the return movement of the handle, the restoring bar will he swung forwardly to restore the hammers thus fired to latching position.

The cam actuated restoring arm 6l is also provided at a point adjant the lower end of the ke shank 48 with a cone-shaped stud (see ig. 2) which co-acts with a sin-.ill non-print-restoring-latch 66 pivoted to the key shank 48 at a point immediately above the heel 56 thereof, a spring 67 being pro- *vided to hold the latch in itsdepressed position. The latch normally occupies a position above the cone-shaped stud on the restoring arm 6l which will thus ride under the latch when the nonprint key is in elevated position. When, however, the key is depressed, it will cause the latch 66 to hear down upon the stud as in Fig. Il at the time the non-print key is held down by the engagement of the shoulder 55 with the end of the slot 54. When the main operating shaft is rocked forwardly, the restoring arm 61 will b e moved to' the rear, thereby rele-es ing, the latch and allowing it to spring down into Vthe line of return travel of the conical stud 65, so that on the return movement ofv the restoring bar and parts associated therewith, thestnd will engage the rear end of the latch 66 and kickl hack the key shank 48 releasing the same and allowing the key to rise to normal position, save only in those cases where the key is locked in depressed position by a forward adjustment of the lock lever 58, in which latter case the kicking ot of the shoulder 55 will, of course,

have no effect in restoring the non-print key to normal position.` When the non print key is unlocked and depressed, it'may e manually restored in case of an accidental or unintentional depression by pull ing manually forward on the non-print key to efect a release of the shoulder, 55 from the end of the slot 54.

Attention is now directed to the parts which hold the platen against its normal or usual rotation when the non-print key is depressed. Normally when the handle is operated, the lower .end of the arm 68 which is mounted on a shaft 69 is free to rock for wardly by the action of a cam 69 controlled by a link 69", and when the arm 68 is thus rocked to the limit of its forward movement, it effects the, operation of the platen ratchet pawl 70a to get a. proper lead on the next tooth of the ratchet 70", shown in Figs. 6 and 7. Any usual form of platen ratchet operating mechanism maybe employed, and these features, being well under- 73 freely -iournaled on a shaft 74. rl`he` mounting 73 carries the roller 7 5 which is adapted to he engaged hy a toe 76 of the key shank 4:8 when the latter is depressed as in Figs. 4 and 5. With a depression ot the shank, the hlock arm 72, will be swung upwardly into the path of movement of the stud 70, so that the normal movement of the latter will loe blocked as in Fig. 5,thereby preventingr suieient amplitude of movement of the shaft 69 to eiect an operation lof the platen ratchet mechanism. When the nonprint key is restored to normal position, the block arm i2 will he swung downwardly through the tension et a spring 77, thereby permitting the platen to be ae'ain operated in the normal manner. lVhile, in many circumstances, it will he desirable to coordinate the non-print and spacing mechanisms in the manner described, it is plain that the keycontrolled action of the non-spacing mechanisms may be omitted it a co-action of theseeatures is not deemed desirable.

In operation, when the non-print key is depressed, it will be held down until restored bythe return stroke of the handle. The depression ot the nonprint key will block the normal movement of the tiring har. so that norma-l unlatching of the hammers will be revented, thereby permitting the adding an accumulating of the item introduced into the machine -without effecting a printing thereof. lThe return movement of the handle will restore the hammers to latched position and simultaneously restore the nonprint key to normal position unless the latter he locked down to prevent restoration during a succession of operations. The depression of the key likewise a'ects a disahlingir of the line spacing mechanism, so that the platen will not he rotated in the normal manner.

The various mechanisms herein described' are so related to and harmonize with the adding machine mechanism that they interfere in no way with the normal operation of the addingI machine, nor does the presence of the special mechanisms herein described require any .substantial change or modification in the structure or arrangement of the parts for effecting the customary adding machine operation.

I claim: i 1. In a mechanism of the class described. the combination of a main shaft. type carriers, hammers for the type carriers, lateh` ing means` for the hammers, means conn trolled by the type carriers for normally effecting unlatching of .the corresponding hammers, non-print mechanism for lblocking the normal operation4 of the latch releasing mechanism, means actuated by the main shaft vfor automatically restoring the nonprint mechanism to normal position, locking means for counteracting the eliect of said restoring means, a platen, means for normally rotating the platen, and means actuated by the non-print mechanism -for rendering inedective the action of said platen rotating means, substantially as described.

2. ln a mechanism of the class described, the combination of type carriers, type carried by the carriers, hammers co-acting with said type, a latch for each of said hammers co-acting with the corresponding type bar and adapted to be displaced by movement of the type bar, a firing bar with which the latch members are adapted to engage under the control of the type carriers and adapted when moved to actuate the engaged number ci? latches to release the corresponding hammers; and non-print mechanism adapted when actuated to bloclr the normal releasing' movements of said firing bar, substantially as described.

3. lin a mechanism of the class described, the combination of type carriers, type car ried by the carriers, hammers rio-acting with said type, e latch for each of said hammers co-actino with the corresponding type carrier and adapted to be displaced by move` ment clE the type carrier, a tiring bar with which the latch members are adapted to engage under `the control of the type carriers and adapted when moved to actuate the engaged number o3? latches to release the corresponding hammers, non-print mechanism adapted when actuated to bloclr the normal releasingf movements of said firing bar, and means 'temporarily holding said non-print mechanism against return movement prior to the hammer ring stage in 'the operation, substantially es described. y

el. lin a mechanism or" the class described, the combination oiz type carriers, type carried by 'the carriers, hammers co-acting with said type, a latch for each of said hammers co-acting with the corresponding type carrier and adapted to be displaced-by movement of the type carrier, a ring bar with which the lat-ch members are adapted to engage under the control oi 'the type carriers and adapted when moved to actuate the engaged numbered latches to release `the corresponding hammers, nonprint mechanism adapted when actuated 'to bloclr the normal releasing movements ol' said iring bor, means temporarily' holding; said non-print mechanism against return movement prior to the hammer hiring stage in the operation, and means lo? ultimately restoring the non` print mechanism to normal positiomsubstantially as describe l.

in a mechanism oi the class described, the combination of type carriers, type car-v and adapted to be displaced by movement of the type carrier, a firing bar with which the'latch members are adapted to engage` under the control of the -type carriers and adapted when moved to -actuate the engaged number of latches to release the corresponding hammers, non-print mechanism adapted when actuated to block the normal releasing movements of said firing bar, means temporarily holding said non-print mechanism against return movement prior to the hammer firing stage in the operation, means for ultimately restoring the non-print mechanism to normal position, and means for locking said non-print mechanism against the ellect of said restoring mechanism, substantially as described.

6. In a mechanism of the class described, the combination of type carriers, type carried by the carriers,` hammers co-actng with said type carriers, a latch for each of said hammers co-acting with the corresponding type carrier and adapted to be displaced by movement ol" the type carrier, a firing bar with which the latch members are adapted 'to engage under lthe control of the 'type carricrs and adapted when moved to actuate the engaged number oi. latches to release the corresponding' hammers, non-print mechanism adaptcd when actuated to bloclr the normal releasing movements oi said tiring bar, a platen, means llor normally rotating the platen, and means actuated by the nonprint mechanism for rendering ineilective the action oi said platen rotating means, substantially as described,

7. ln a mechanism 'oft thev class described, the combination oi type carriers, type carried by the carriers, hammersco-e'cting with Asaid type carriers, a latch tor each or said hammers coasting' with' the corresponding type carrier and adapted to be displaced by movement ot' the type carrier, a liz-ing; bar with which the latch members are adapted to engage under 'the control of the type carrifers and adapted when moved to actuate the engaged number of latches to release the correspnding hammers, non-print mechanism adapted when actuated to block the normal releasing; movements of said firing bar, means for temporarily holding said non-print mechanism against return move ment prior to the hammer dring stage in 'the operation, a platen, means lfor normally rorating the blaten, and means actuated by the nonprint mechanism for rendering inell'cc tive the action of said platen rotating means, substantially as described.

8.. ln a mechanism of the class described, the combination of type carriers, type cerried by the carriers, hammers co-acting with said type carriersJ a latch for each of said hammers co-acting with the corresponding type Vcarrier and adapted to be dis lacedby movement of the type carrier, a ring bar with which the latch members are adapted to engage under the control of the type carriers and adapted when moved to actuate the engaged number of latches to release the corresponding hammers, non-print mechanism adapted when actuated to block the normal releasingmovementsl of said rin bar, means for temporarily holding sai non-print mechanism against return move ment prior to the hammer firing stage in the operation, means for ultimately restoring the non-print mechanism to normal position, a platen, means for normally rotating the platen, and means actuated by the non-print mechanism for rendering ineffective the action of said platen rotating means, substantially as described.

9. "In a mechanism of the class described, the combination of type carriers, type carried by the carriers, hammers cao-acting with said type carriers, a latch for each of said hammers (3o-acting with the corresponding type carrier and adapted. to be dis laced by movement of the type carrier, a ring bar with which they latch members are adapted to engage under the control of the type carriers and adapted when moved to actuate the engaged number of latches to release the corresponding hammers, non-print mechanism adapted when actuated to block the normal releasing movements of said firing bar, means for temporarily holding said nonprint mechanism against return movement prior to the hammer firing stage in the o eration, means for ultimately restoring tige non-print mechanism to normal position, means for locking said non-print mechanism against the effect of said restoring mechanism, a platen, means for normally rotating the platen and means actuated by the non print mechanism for rendering ineffective the action of said platen rotating means, substantially as described.

HARRY LANDSIEDEL, 

